Tarnobrzeg is a city in south-eastern Poland, on the east bank of the river Vistula, with 49,419 inhabitants, as of 31 December 2009. Situated in the Subcarpathian Voivodeship since 1999, it had previously been the capital of Tarnobrzeg Voivodeship (1975–1998). Tarnobrzeg lies in the Sandomierz Basin, and directly borders the town of Sandomierz, Świętokrzyskie Voivodeship. Its history dates back to the year 1593, when it was granted Magdeburg rights, and belonged to the Tarnowski family. For centuries Tarnobrzeg remained a small town, which did not develop until the post-World War II period, when it became center of an industrial area, based on rich sulfur deposits.

Dębica is a town in southeastern Poland with 44,692 inhabitants as of December 2021. It is the capital of Dębica County. Since 1999 it has been situated in the Podkarpackie Voivodeship; it had previously been in the Tarnów Voivodeship (1975–1998). Dębica belongs to the historic province of Lesser Poland, and for centuries it was part of the Sandomierz Voivodeship.